fix: symlink nvm node/npm to /usr/bin for act runner

Node is installed via nvm at /root/.nvm which isn't in the runner's
shell PATH. Symlink node, npm, npx to /usr/bin so they're available
in all contexts including post-step cleanup.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

.gitea/workflows/deploy.yaml

@@ -11,8 +11,9 @@ jobs:
     steps:
       - name: Setup PATH
         run: |
-          NODE_BIN=$(which node)
-          ln -sf "$NODE_BIN" /usr/bin/node
+          ln -sf /root/.nvm/versions/node/*/bin/node /usr/bin/node
+          ln -sf /root/.nvm/versions/node/*/bin/npm /usr/bin/npm
+          ln -sf /root/.nvm/versions/node/*/bin/npx /usr/bin/npx
 
       - name: Checkout
         uses: http://47.121.181.112:3000/wonder/checkout@v4